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  • 标题:Rapid assessment of fruit-color selection by birds using artificial fruits at local scale in Central Amazonia
  • 本地全文:下载
  • 作者:Arruda, Rafael ; Rodrigues, Domingos J. ; Izzo, Thiago J.
  • 期刊名称:Acta Amazonica
  • 印刷版ISSN:0044-5967
  • 出版年度:2008
  • 卷号:38
  • 期号:2
  • 页码:291-296
  • DOI:10.1590/S0044-59672008000200011
  • 语种:English
  • 出版社:Instituto Nacional de Pesquisas da Amazônia
  • 摘要:

    Modeling clays have been used in several ecological experiments and have proved to be an important tool to variables control. The objective of our study was to determine if fruit color in isolated and grouped displays influences the fruit selection by birds in the field using artificial fruits. Data were collected in six plots distributed homogeneously in 3 km long trails with a minimum distance of 0.5 km. We used a paired experimental design to establish our experiments, so that all treatments were available to the local bird community in each plot. Overall, red was more pecked than brown and white. Isolated red and brown displays were significantly more pecked than others display. Even though our study was conducted in small spatial scales, artificial fruits appeared to be efficient in register fruit consumption attempts by bird. Although inconclusive about selective forces that sharp the dynamics of fruit color polymorphisms and choice by frugivorous birds, our findings corroborate recent studies wherein birds showed preferences by high- over low-contrast fruit signals.

  • 关键词:Cor do fruto;Desenho experimental pareado;Coloração de fundo;Hipótese de contraste
  • 其他关键词:Fruit color;Paired experimental design;Background foliage coloration;Contrast hypothesis
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